unattended
/ˌʌnəˈtendɪd/adjective
1- not noticed or dealt with未被注意的; 未处理的：
her behaviour went unnoticed and unattended to.
她的行为没有引起任何注意。
1.1
- not supervised or looked after无人照看的：
it is not acceptable for parents to leave children unattended at that age.
父母把那种年龄的孩子丢下不管令人无法接受。